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Sorona isDuPont de Nemours, Inc.'s brand ofTriexta, a subclass ofpolytrimethylene terephthalate (PTT)[1] named and commercialized in 2000.[2] The fibers are soft and stain-resistant while exhibiting high strength and stiffness.[3]
Sorona is a co-polymer of1,3-propanediol (obtained by fermentation) and petroleum-derivedterephthalic acid (TPA) ordimethyl terephthalate (DMT).[3] Related polymers in this series includepolyethylene terephthalate (2GT) andpolybutylene terephthalate (polytetramethylene terephthalate) (4GT).[4]
Sorona can theoretically be produced from about 37% renewable resources as[3] DuPont won a 2003Presidential Green Chemistry Challenge Award for their development of the fermentation process for the production of 1,3-propanediol from corn-derived glucose in recombinantEscherichia coli K-12.[5]
The polymer Sorona has been mentioned byJ. Craig Venter in interviews as an example of an application ofindustrial biotechnology. He was quoted as saying, "DuPont argues that Sorona is going to be the first billion-dollar biotech product other than a pharmaceutical".[6]
Sorona has been used in the manufacture ofclothing, residentialcarpets, automotive fabrics, and plastic parts.[7]Mohawk Industries is currently the exclusive North American carpet manufacturer making carpets using DuPont Sorona fiber.[8]
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